diff options
Diffstat (limited to 'sysdeps/generic/machine-lock.h')
| -rw-r--r-- | sysdeps/generic/machine-lock.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/sysdeps/generic/machine-lock.h b/sysdeps/generic/machine-lock.h index 5b9b2145e6..9a30226aba 100644 --- a/sysdeps/generic/machine-lock.h +++ b/sysdeps/generic/machine-lock.h @@ -34,14 +34,21 @@ typedef volatile int __spin_lock_t; /* Unlock LOCK. */ +void __spin_unlock (__spin_lock_t *__lock); + +#ifdef __USE_EXTERN_INLINES _EXTERN_INLINE void __spin_unlock (__spin_lock_t *__lock) { *__lock = 0; } +#endif /* Try to lock LOCK; return nonzero if we locked it, zero if another has. */ +int __spin_try_lock (__spin_lock_t *__lock); + +#ifdef __USE_EXTERN_INLINES _EXTERN_INLINE int __spin_try_lock (__spin_lock_t *__lock) { @@ -50,14 +57,19 @@ __spin_try_lock (__spin_lock_t *__lock) *__lock = 1; return 1; } +#endif /* Return nonzero if LOCK is locked. */ +int __spin_lock_locked (__spin_lock_t *__lock); + +#ifdef __USE_EXTERN_INLINES _EXTERN_INLINE int __spin_lock_locked (__spin_lock_t *__lock) { return *__lock != 0; } +#endif #endif /* machine-lock.h */ |